Exercise aid



FIG. 1 is a perspective view of a exercise aid, showing the new design;

FIG. 2 is an alternate perspective view thereof, illustrated in a flatconfiguration;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left-side elevational view thereof;

FIG. 6 is a right-side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines showing a person in FIG. 1 illustrate environmentalstructure which forms no part of the claimed design.

What is claimed is the ornamental design for a exercise aid, as shownand described.